Exemple #1
0
// NewImage returns a new image canvas
// that draws to the given image.  The
// minimum point of the given image
// should probably be 0,0.
func NewImage(img draw.Image, name string) (*Canvas, error) {
	w := float64(img.Bounds().Max.X - img.Bounds().Min.X)
	h := float64(img.Bounds().Max.Y - img.Bounds().Min.Y)

	X, err := xgbutil.NewConn()
	if err != nil {
		return nil, err
	}
	keybind.Initialize(X)
	ximg := xgraphics.New(X, image.Rect(0, 0, int(w), int(h)))
	err = ximg.CreatePixmap()
	if err != nil {
		return nil, err
	}
	painter := NewPainter(ximg)
	gc := draw2d.NewGraphicContextWithPainter(ximg, painter)
	gc.SetDPI(dpi)
	gc.Scale(1, -1)
	gc.Translate(0, -h)

	wid := ximg.XShowExtra(name, true)
	go func() {
		xevent.Main(X)
	}()

	c := &Canvas{
		Canvas: vgimg.NewWith(vgimg.UseImageWithContext(img, gc)),
		x:      X,
		ximg:   ximg,
		wid:    wid,
	}
	vg.Initialize(c)
	return c, nil
}
Exemple #2
0
func (c *Calibrate) Update(entity *ecs.Entity, dt float32) {
	if c.frameIndex != 0 {
		return
	}

	var (
		cal *CalibrateComponent
		ok  bool
	)

	if cal, ok = entity.ComponentFast(cal).(*CalibrateComponent); !ok {
		return
	}

	// Render the image again
	plt, err := plot.New()
	if err != nil {
		log.Fatal(err)
	}

	plotutil.AddLinePoints(plt,
		"CH"+strconv.Itoa(int(cal.ChannelIndex)), plotter.XYer(c.channels[cal.ChannelIndex]))
	img := image.NewRGBA(image.Rect(0, 0, 3*dpi, 3*dpi))
	canv := vgimg.NewWith(vgimg.UseImage(img))
	plt.Draw(draw.New(canv))
	bgTexture := engi.NewImageRGBA(img)

	// Give it to engi

	erender := &engi.RenderComponent{
		Display:      engi.NewRegion(engi.NewTexture(bgTexture), 0, 0, 3*dpi, 3*dpi),
		Scale:        engi.Point{1, 1},
		Transparency: 1,
		Color:        color.RGBA{255, 255, 255, 255},
	}
	erender.SetPriority(engi.HUDGround)

	entity.AddComponent(erender)
}